Device for facilitating the riveting of cutters to mower-cylinders



STATES Nrn JOHN BBAUN, OF PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 225,967, dated March 30, 1880.

Application filed November 29, 1879.

To all whom it may concern:

Be it known that I, JOHN BRAUN, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Devices for Facilitating the Riveting of Gutters to Mower-Cylinders, &c., which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a top or plan view of riveting apparatus embodying my invention. Fig. 2 is an end view thereof. Fig. 3 is a view of a detached part.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a stand for supporting the cylinder during the operation of riveting the spiral cutters to the same, and anvils adapted to receive the heads of the rivets and made shiftable, so as to be properly located relatively to the rise or spiral form of the cutters.

Referring to the drawings, A represents standards rising from a base, B, and supporting the shaft of the cylinder during the operations of riveting the spiral cutters to the cylinder-heads.

On the base 13 is a way, 0, to each end of which is fitted an anvil, D, having a dovetailed tenon, which enters a corresponding groove in the way. From the top of the anvil project two heads, E E, having counter sunk faces and inclining in opposite directions, the heads of one anvil being shorter than those of the other.

The rivets are inserted in the openings in the lugs of the cylinder head and knives, and the anvils are so adjusted that the head of the rivet to be hammered will enter the concave face or pocket of one of the heads E of the anvil. For this purpose the anvils of the two sides require to be shifted in order to cause the heads of the inserted rivets to enter the proper high or low heads E of the anvils. The rise of the knives, owing to the spiral form of the same, brings said rivet-heads at different points; consequently it is necessary for the workman to exercise his judgment to locate under the rivet-head the proper head of one of the anvils. Therefore, an anvil is ap-' plied to the way 0 in such a manner that the rightful head E comes under the head of the rivet to be hammered, as shown, for example, at 1' in the right-hand side of Fig. 2, after which the hammering or heading of the point or end of said rivet is accomplished. Then another rivet is inserted in other openings of the lugs of the cylinder head and knives, and an anvil is applied to the way 0 and. moved in toward the cylinder, so that when the cylinder is rotated on its shaft, resting on the standards A, as has been stated, the last applied rivet will have its head properly set in the respective head E of the anvil. Then said rivet is hammered, another rivet inserted, and the proper anvil applied, and the other operations are repeated.

The heads of the rivets may also require to be hammered down on the lugs of the cylinder head, in which case the hammered .or headed points or ends of the rivets are set in the heads E of the anvils, the latter being manipulated to bring the proper heads in position' relatively to the rise of the knives, asin the previously-described operations.

There may be a pair of anvils for each disk or head of the cylinder-head, or one pair for the several disks or heads, in which latter case the way 0 has, as shown in the drawings, a dovetailed groove, to fit a dovetailed bar, 0, placed on the base B, thus permitting the shifting of the way and its anvils under the several disks or heads ofthe cylinders. When said disks or heads have strengthening flanges or ribs, as shown at s, the upper ends of the anvils are grooved, as at t, to permit the anvils to set close to the said disks or heads.

By these means the knives and disks or heads of the cylinder may be riveted in an economical, convenient, and uniform manner.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The anvils D D, provided with high and low heads E E, and shiftable on the way 0, substantially as and for the purpose set forth.

2. The standards A, way 0, and shifting anvils D, with heads E, combined and operating substantially as and for the purpose set forth.

JOHN BRAUN.

Witnesses:

J OHN A. Wl'EDERSHEIM, A. P. GRANT. 

